Development Of Posttraumatic Stress Disorder Research Articles

Proteasome-independent K63 polyubiquitination selectively regulates ATP levels and proteasome activity during fear memory formation in the female amygdala.

Females are more likely than males to develop post-traumatic stress disorder (PTSD). However, the neurobiological mechanisms responsible for these sex differences remain elusive. The ubiquitin proteasome system (UPS) is involved in fear memory formation and implicated in PTSD development. Despite this, proteasome-independent functions of the UPS have rarely been studied in the brain. Here, using a combination of molecular, biochemical, proteomic, behavioral, and novel genetic approaches, we investigated the role of proteasome-independent lysine-63 (K63)-polyubiquitination, the second most abundant ubiquitin modification in cells, in the amygdala during fear memory formation in male and female rats. Only females had increased levels of K63-polyubiquitination targeting in the amygdala following fear conditioning, which targeted proteins involved in ATP synthesis and proteasome function. CRISPR-dCas13b-mediated knockdown of K63-polyubiquitination in the amygdala via editing of the K63 codon in the major ubiquitin gene, Ubc, impaired fear memory in females, but not males, and caused a reduction in learning-related increases in ATP levels and proteasome activity in the female amygdala. These results suggest that proteasome-independent K63-polyubiquitination is selectively involved in fear memory formation in the female amygdala, where it is involved in the regulation of ATP synthesis and proteasome activity following learning. This indicates the first link between proteasome-independent and proteasome-dependent UPS functions in the brain during fear memory formation. Importantly, these data are congruent with reported sex differences in PTSD development and may contribute to our understanding of why females are more likely to develop PTSD than males.

Emotion regulation repertoires in trauma-exposed college students: Associations with PTSD symptoms, emotional awareness, and emotional clarity.

Emotion regulation (ER) plays a prominent role in the development and maintenance of posttraumatic stress disorder (PTSD). Although links between ER strategies and PTSD symptoms are well documented, recent advancements in ER research emphasize the need to move beyond examining ER strategies as isolated processes. Instead, there is a growing movement to understand ER repertoires, or the patterns in which individuals report habitually using the multiple ER strategies available to them. Additionally, awareness and clarity of one's emotional experiences might play a key role in the effective use of ER strategies. The current study examined person-centered repertoires of the habitual use of eleven ER strategies among 372 undergraduates exposed to Diagnostic and Statistical Manual of Mental Disorders, 5th edition (DSM-5) Criterion A trauma-and their relations to PTSD symptoms, emotional awareness, and emotional clarity. Latent profile analysis yielded a three-profile solution (Adaptive, Average, and Maladaptive Regulators) and profiles differed on mean levels PTSD symptoms. Emotional clarity, but not emotional awareness, emerged as a significant predictor of profile classification, even after adjusting for negative affect. Findings suggest that emotional clarity might help foster healthy repertoires of ER strategy use and buffer against the development of PTSD among trauma-exposed individuals. (PsycInfo Database Record (c) 2022 APA, all rights reserved).

Association of systemic inflammation with posttraumatic stress disorder after a myocardial infarction

BackgroundAdverse mental health conditions including depression, posttraumatic stress disorder (PTSD), and anxiety are prevalent among patients who survive myocardial infarctions (MI) and are associated with adverse outcomes. The mechanisms underlying these associations, however, are not well understood. Inflammatory pathways may mediate the cardiovascular outcomes of patients with mental health disorders. We examined the bidirectional association between PTSD symptoms and inflammatory biomarkers in a young/middle-aged post MI population. We further examined how this association may differ between women and men as well as between Black and non-Black individuals. MethodsParticipants included individuals with early onset MI between the ages 25 and 60. Mental health scores for depression, PTSD, perceived stress, and anxiety as well as inflammatory biomarkers, interleukin-6 (IL-6) and high sensitivity C-reactive protein (hsCRP), were collected at baseline and at six-month follow up. We examined the bidirectional changes in mental health symptoms and inflammatory biomarkers between baseline and follow-up. ResultsAmong 244 patients in the study (mean age: 50.8, 48.4% female, 64.3% Black), the geometric means for IL-6 level and hsCRP at rest were 1.7 pg/mL and 2.76 mg/L, respectively. Mental health scores at baseline did not consistently predict changes in inflammatory biomarkers at follow-up. However, baseline levels of both IL-6 and hsCRP were robustly associated with an increase in re-experiencing PTSD symptoms at 6 months: in adjusted linear mixed models, there was a 1.58-point increase in re-experiencing PTSD symptoms per unit of baseline hsCRP (p = 0.01) and 2.59-point increase per unit of baseline IL-6 (p = 0.02). Once the analysis was stratified by race, the association was only noted in Black individuals. Baseline inflammation was not associated with change in any of the other mental health symptom scores. ConclusionMarkers of inflammation are associated with an increase in post-event PTSD symptoms in younger or middle-aged patients who experienced an MI, especially Black patients. These results suggest a mechanistic link between inflammation and the development of PTSD among individuals with cardiovascular disease.

The influence of the behavioural inhibition system on the development of PTSD-like symptoms after presentation of a traumatic film in healthy subjects

ABSTRACT Background: The Behavioural Inhibition System (BIS) as a neural system controlling motivation and behaviour, has previously been linked to multiple mental disorders, including Post-traumatic Stress Disorder (PTSD). BIS-sensitivity could increase the likelihood of PTSD development after trauma. However, previous studies have largely measured BIS-sensitivity retrospectively (i.e. after trauma, or even after onset of PTSD). Objective: The study aims to confirm the relationship between BIS-sensitivity prior to trauma and PTSD symptoms. Method: After assessment of BIS-sensitivity, N = 119 healthy participants watched a film with visually disturbing material. After 72 h, participants completed a questionnaire on PTSD-related symptoms (PCL-5). Results: In a multiple linear regression model, BIS-sensitivity significantly predicted PTSD symptoms, even after controlling for the decrease in mood, as well as for participants’ age and sex, two factors that had previously been shown to influence BIS-sensitivity. Conclusions: This is the first study to measure BIS-sensitivity before the occurrence of the (experimental) trauma and strengthens its role as a potential pre-traumatic risk factor.

Childhood Trauma and PTSD Symptoms: Disentangling the Roles of Emotion Regulation and Distress Tolerance.

Research documents that a history of childhood trauma increases risk for post-traumatic stress disorder (PTSD), greater emotion regulation difficulties (ERD), and reduced distress tolerance (DT). Independent lines of research implicate ERD and DT as transdiagnostic risk factors and link them to PTSD. To elucidate how such mechanisms may influence the etiology, maintenance, and treatment of PTSD, the current study investigates the distinct mediating roles of emotion regulation and DT, exploring which explains a larger indirect effect from childhood trauma to PTSD symptom severity. Participants (N = 385, aged 18-48) who endorsed a history of childhood trauma provided retrospective report of cumulative childhood trauma exposure, and of current ERD, DT, and PTSD symptom severity. Single and dual mediation analyses were used to assess indirect effects through ERD and DT in the relation between cumulative childhood trauma exposure and current PTSD symptom severity. ERD and DT were significantly and inversely related. Higher current self-ratings of PTSD symptom severity were explained by cumulative childhood trauma through ERD (B = 0.93, p < 0.001) and DT (B = 0.50, p < 0.05). The full model explained 36% of the variance in PTSD symptom severity. Current findings provide preliminary evidence of DT and emotion regulation (with specific facets identified) as distinct mechanisms in the development of PTSD. Of clinical relevance, current findings support post-trauma processing theories that contend individuals' recovery requires accepting and learning to modulate trauma-related emotional states. Implications for methods of treatment and prevention are discussed.

Post-traumatic stress disorder among individuals with traumatic spinal cord injury in Nepal: a cross-sectional study.

Cross-sectional study OBJECTIVES: To identify the prevalence of posttraumatic stress disorder (PTSD) among the individuals with traumatic spinal cord injury (TSCI) and to examine the relationships between demographic and clinical characteristics, and PTSD. Spinal Injury Rehabilitation Center (SIRC) and Dhulikhel Hospital, Kathmandu University Hospital (DH, KUH), Kavrepalanchowk, Nepal. Individuals above 18 years of age with TSCI of at least one month from trauma and admitted to SIRC and DH, KUH from June 2019 to May 2021 were included. The specific stress version of the PostTraumatic Stress Disorder Checklist (PCL), was utilized. To classify the neurological status of TSCI individuals, International Standard for Neurological Classification of Spinal Cord Injury (ISNCSCI) was used. Hierarchical multiple regression analysis between independent variables and normalized PCL score was done to evaluate the predictors of PTSD. Among 163 patients, the overall prevalence of PTSD was 27%, and the mean PCL score was 36 ± 13.9. Factors predictive of PTSD included gender, family type, ethnicity, and literacy rate. No significant association was found between the clinical characteristics and PTSD. PTSD appears to be considerably prevalent among individuals with TSCI in Nepal. Females, individuals from nuclear families, individuals with lower literacy, and individuals from lower caste are significantly vulnerable to developing PTSD. However, clinical characteristics do not appear to be influential in the development of PTSD.

Neural valuation of rewards and punishments in posttraumatic stress disorder: a computational approach

Posttraumatic stress disorder (PTSD) is associated with changes in fear learning and decision-making, suggesting involvement of the brain’s valuation system. Here we investigate the neural mechanisms of subjective valuation of rewards and punishments in combat veterans. In a functional MRI study, male combat veterans with a wide range of posttrauma symptoms (N = 48, Clinician Administered PTSD Scale, CAPS-IV) made a series of choices between sure and uncertain monetary gains and losses. Activity in the ventromedial prefrontal cortex (vmPFC) during valuation of uncertain options was associated with PTSD symptoms, an effect which was consistent for gains and losses, and specifically driven by numbing symptoms. In an exploratory analysis, computational modeling of choice behavior was used to estimate the subjective value of each option. The neural encoding of subjective value varied as a function of symptoms. Most notably, veterans with PTSD exhibited enhanced representations of the saliency of gains and losses in the neural valuation system, especially in ventral striatum. These results suggest a link between the valuation system and the development and maintenance of PTSD, and demonstrate the significance of studying reward and punishment processing within subject.

The co-occurrence of potentially traumatic events (PTEs) and their associations with posttraumatic stress disorder (PTSD) in Indian and Malaysian adolescents

BackgroundAlthough it is well-established that people can experience multiple traumatic events, there are few studies examining the co-occurrence of such experiences in non-Western nations. The current study sought to examine the occurrence of multiple potentially traumatic experiences (PTEs) and their associations with posttraumatic stress disorder (PTSD) among adolescents from two Asian nations. MethodsLatent class analysis (LCA) was employed to model the co-occurrence of PTEs in two school samples of adolescents from India (n = 411) and Malaysia (n = 469). Demographic correlates (i.e., sex, age, household composition, parent education) of the latent classes and the association between latent class membership and probable diagnosis of posttraumatic stress disorder (PTSD) were examined. ResultsThe LCA identified three latent classes for the Indian sample: ‘Low Risk – moderate sexual trauma’, ‘Moderate Risk’, and ‘High Risk’. Similarly, three classes were also identified for the Malaysian sample: ‘Low Risk’, ‘Moderate Risk’, and ‘High Risk’. Membership of ‘Moderate Risk’ was associated with male sex in both samples, and with older age and lower levels of parental education attainment in the Malaysian sample. No correlates of ‘High Risk’ class were identified in either sample. Membership of the ‘High Risk’ class was significantly associated with probable PTSD diagnosis in both samples, while membership of the ‘Moderate Risk’ class was associated with probable PTSD diagnosis in the Malaysian sample. ConclusionFindings from this study correspond with Western studies indicating co-occurrence of PTEs to be common and to represent a salient risk factor for the development of PTSD.

Altered bed nucleus of the stria terminalis and amygdala responses to threat in combat veterans with posttraumatic stress disorder.

Posttraumatic stress disorder (PTSD) significantly impacts many veterans. Although PTSD has been linked to alterations in the fear brain network, the disorder likely involves alterations in both the fear and anxiety networks. Fear involves responses to imminent, predictable threat and is driven by the amygdala, whereas anxiety involves responses to potential, unpredictable threat and engages the bed nucleus of the stria terminalis (BNST). The BNST has been implicated in PTSD, but the role of the BNST in combat veterans with PTSD has yet to be examined. Identifying alterations in BNST responses to unpredictable threat could provide important new targets for treatment. The current study examined whether veterans with PTSD have altered BNST or amygdala responses (function and connectivity) to unpredictable and predictable threat. The fMRI task involved viewing predictable threat cues followed by threat images, predictable neutral cues followed by neutral images, and unpredictable threat cues followed by either a threat or neutral image. Participants included 32 combat-exposed veterans with PTSD and 13 combat-exposed controls without PTSD. Across all conditions, veterans with PTSD had heightened BNST activation and displayed stronger BNST and amygdala connectivity with multiple fear and anxiety regions (hypothalamus, hippocampus, insula, ventromedial prefrontal cortex) relative to controls. In contrast, combat controls showed a pattern of stronger connectivity during neutral conditions (e.g., BNST-vmPFC), which may suggest a neural signature of resilience to developing PTSD, ηp 2 = .087-.527, ps < .001. These findings have implications for understanding fear and anxiety networks that may contribute to the development and maintenance of PTSD.

The Association of the Polymorphisms in the FUT8-Related Locus with the Plasma Glycosylation in Post-Traumatic Stress Disorder.

The molecular underpinnings of post-traumatic stress disorder (PTSD) are still unclear due to the complex interactions of genetic, psychological, and environmental factors. Glycosylation is a common post-translational modification of proteins, and different pathophysiological states, such as inflammation, autoimmune diseases, and mental disorders including PTSD, show altered N-glycome. Fucosyltransferase 8 (FUT8) is the enzyme that catalyzes the addition of core fucose on glycoproteins, and mutations in the FUT8 gene are associated with defects in glycosylation and functional abnormalities. This is the first study that investigated the associations of plasma N-glycan levels with FUT8-related rs6573604, rs11621121, rs10483776, and rs4073416 polymorphisms and their haplotypes in 541 PTSD patients and control participants. The results demonstrated that the rs6573604 T allele was more frequent in the PTSD than in the control participants. Significant associations of plasma N-glycan levels with PTSD and FUT8-related polymorphisms were observed. We also detected associations of rs11621121 and rs10483776 polymorphisms and their haplotypes with plasma levels of specific N-glycan species in both the control and PTSD groups. In carriers of different rs6573604 and rs4073416 genotypes and alleles, differences in plasma N-glycan levels were only found in the control group. These molecular findings suggest a possible regulatory role of FUT8-related polymorphisms in glycosylation, the alternations of which could partially explain the development and clinical manifestation of PTSD.

Sleep and mental health in recruit paramedics: A 6-month longitudinal study.

To explore potential relationships and longitudinal changes in sleep and mental health in recruit paramedics over the first 6-months of work, and whether sleep disturbances pre-emergency work predict future mental health outcomes. Participants (N=101, 52% female, Mage=26 years) completed questionnaires prior to (baseline), and after 6 months of emergency work to assess for symptoms of insomnia, obstructive sleep apnea, post-traumatic stress disorder (PTSD), depression, anxiety, and trauma exposure. At each timepoint, participants also completed a sleep diary and wore an actigraph for 14 days to assess sleep patterns. Correlations between baseline sleep and mental health were conducted and changes in these variables across timepoints were examined using linear mixed models. Hierarchical regressions assessed whether sleep at baseline predicted mental health at follow-up. Insomnia and depression symptoms, and total sleep time increased while sleep onset latency decreased across the first 6 months of emergency work. Participants experienced an average of 1 potentially traumatic event during the 6-month period. Baseline insomnia predicted increased depression symptoms at the 6-month follow-up, while baseline wake after sleep onset predicted follow-up PTSD symptoms. Results highlight an increase in insomnia and depression across the initial months of emergency work, while sleep disturbances before emergency work were identified as potential risk factors for the development of depression and PTSD among paramedics in their early career. Screening and early interventions targeting poor sleep at the beginning of emergency employment may assist in reducing the risk of future mental health outcomes in this high-risk occupation.

The impact of climate change and natural disasters on the development of post traumatic stress disorder in child and adolescent population

IntroductionMajor traumatic natural disasters have occurred worldwide. Post-traumatic stress disorder (PTSD) has been the most common psychiatric disorder discussed by the studies addressing the psychological sequelae of adolescents after traumatic natural disasters. In this study we have studied the impacts of natural disaster yash cyclone that took place in West Bengal on the development of PTSD; factors related to the development of PTSD; predisposing, precipitating, and perpetuating factors related to the development of PTSD.ObjectivesTo assess the incidence and prevalence of ptsd amongst survivors of natural disaster yash cyclone in a rural hamlet of West Bengal.MethodsIn this study ,200 survivors from Yash cyclone who belonged to Child and Adolescent age group were randomly selected .PCL 5 Scale was used to collect data and assess the incidence and prevalence of PTSD , standardized Bengali versions of the questionnaire was used in our study.ResultsThere is statistical correlation between post traumatic stress disorder and subjects exposed to climate change events such as cyclone Yash.Initial research suggests that a PCL-5 cut-off score between 31-33 is indicative of probable PTSD across samples.In our study the mean pcl 5 value from the data assessment is 70.67 with standard deviation of 4.61.Further assessment by linear regression analyses shows that female subjects are more prone to post traumatic stress disorder and higher income groups are more susceptible to ptsd.As shown by higher values as per the pcl 5 scale.ConclusionsOur study clearly demonstrates the impact of climate change and natural disasters on the mental health status of people living in disaster prone areas especially the child and adolescent population. Our study group was child and adolescent population between 10 to 15 years.The psychologist and volunteers had to collect data in disaster affected zone , yet they collected data which gave a clear cut findings and a very clear statement on climate change and mental health. The values are very high and consistent in most subjects across all twenty domains.It is our opinion that Mental health support should be provided for all victims of climate change and natural disaster calamities such as cyclone and earthquake.Disclosure of InterestNone Declared

The Role of the Superoxide Radical in the Regulation of the K&lt;sub&gt;V&lt;/sub&gt;-Channels Function in the Coronary Vessels Following Posttraumatic Stress Disorder

The purpose of the research was to study the contribution of the superoxide radical (\({\text{O}}_{2}^{{\centerdot - }}\)) to the mechanisms of the coronary KV-channels functional activity impairment in rats with posttraumatic stress disorder (PTSD). The study was performed on 117 outbred white male rats (Rattus, Muridae weighing 210–240 g). To reproduce the experimental analogue of PTSD, the modified model of “a predator presence imitation” was applied (contact with cats’ excrements for 10 days, 15 minutes daily). The PTSD development was confirmed by behavioral changes of affected animals in the “Open Field” test. The coronary vessels’ tone was studied on the isolated by the Langendorf’s method isotonically contracted hearts, which were perfused under constant flow with Krebs–Henseleit solution. The contribution of \({\text{O}}_{2}^{{\centerdot - }}\) to the coronary vascular tone regulation was studied by infusion of the superoxide radical “scavenger” Tiron (4,5-dihydroxy-1,3-benzenedisulfonic acid) in the perfusion solution. The functional activity of KV-channels was assessed by the degree of increase in the coronary perfusion pressure (CPP) in response to 4-aminopyridine (4-AP), a blocker of KV-channels. To elucidate the role of \({\text{O}}_{2}^{{\centerdot - }}\) in the KV‑channels functional activity of coronary vessels, Tiron and 4-AP were infused in the perfusion solution. The concentration of diene conjugates (DCs), malondialdehyde (MDA), C‑reactive protein (C-RP) and interleukin 1β (IL-1β) as well as catalase (CAT) and superoxide dismutase (SOD) activity were detected in the blood serum of experimental animals. The CPP in the isolated rats’ hearts after PTSD was 30% lower at coronary flow rate 10 mL/min compared to the control group. Under the influence of 4-AP, CPP increased by 70% and by 24% in the “Control” and “PTSD” groups, respectively. Under influence of Tiron, the CPP in the “PTSD” group at coronary flow rate 10 mL/min was 52% lower than in the control. In the “PTSD + Tiron + 4-AP” group the CPP augmentation (71.5%) was comparable to that in the hearts of the “Control” group after 4-AP exposure. The IL-1β, C-RP, DCs and MDA concentration in the blood serum of rats with PTSD was 3, 1.6, 3.3 and 3.6 times higher than in the control rats’ blood serum, while SOD and CAT activity was by 27 and 59% lower, compared to control, respectively. In the course of the investigation, it was found that \({\text{O}}_{2}^{{\centerdot - }}\) overproduction due to oxidative stress might be an important mechanism of a poststressor “channelopathy”, which is characterized by the decreased functional activity of the KV-channels of coronary vessels following PTSD.

The link between Pos-Traumatic Stress Disorder and Childbirth

IntroductionChildbirth can be experienced as distressing or even traumatic for some women and her partners, which could cause psychological distress, intense fear or helplessness and increases the risk of anxiety, depression and even post-traumatic stress disorder (PTSD). The reported prevalence of post-traumatic stress disorder after childbirth ranges from 1.5% to 6%.ObjectivesThe current study aimed to elaborate a narrative literature review to identify predictors associated development of PTSD in women and the partners.MethodsPubMed database searched using the terms “post-traumatic stress disorder” and “childbirth” and “trauma”. Only research conducted in the past 20 years was considered for inclusion.ResultsSeveral variables were associated with risk to development PTSD after childbirth, including negative experiences and severe fear of childbirth, subjetive distress, previous abortion, psychological difficulties in pregnancy, previous psychiatric problems, history of PTSD and trauma. Futhermore, obstretic and birth-related factors such as pregnancy complications, type of birth could also contribute to PTSD in women and her partners. Additionally, diferent environmental factors like poor interaction between provider and mother, low social support during labour and birth are associated with development of PTSD.ConclusionsClinicians should be aware that many women and her parterns have a risk to development PTSD following childbirth. We need to research risk factors in routine clinical practice and carefully monitored the patients with high risk.Disclosure of InterestNone Declared

Critical care nursing workforce in crisis: A discussion paper examining contributing factors, the impact of the COVID-19 pandemic and potential solutions.

The critical care nursing workforce is in crisis, with one-third of critical care nurses worldwide intending to leave their roles. This paper aimed to examine the problem from a wellbeing perspective, offering implications for research, and potential solutions for organisations. Discursive/Position paper. The discussion is based on the nursing and wellbeing literature. It is guided by the authors' collaborative expertise as both clinicians and researchers. Data were drawn from nursing and wellbeing peer-reviewed literature, such as reviews and empirical studies, national surveys and government and thinktank publications/reports. Critical care nurses have been disproportionately affected by the COVID-19 pandemic with studies consistently showing critical care nurses to have the worst psychological outcomes on wellbeing measures, including depression, burnout and post-traumatic stress disorder (PTSD). These findings are not only concerning for the mental wellbeing of critical care nurses, they also raise significant issues for healthcare systems/organisations: poor wellbeing, increased burnout and PTSD are directly linked with critical care nurses intending to leave the profession. Thus, the wellbeing of critical care nurses must urgently be supported. Resilience has been identified as a protective mechanism against the development of PTSD and burnout, thus offering evidence-based interventions that address resilience and turnover have much to offer in tackling the workforce crisis. However, turnover data must be collected by studies evaluating resilience interventions, to further support their evidence base. Organisations cannot solely rely on the efficacy of these interventions to address their workforce crisis but must concomitantly engage in organisational change. We conclude that critical care nurses are in urgent need of preventative, evidence-based wellbeing interventions, and make suggestions for research and practice.

Modified prolonged exposure therapy as Early Intervention after Rape (The EIR-study): study protocol for a multicenter randomized add-on superiority trial

BackgroundSexual assault and rape are the traumatic life events with the highest probability for posttraumatic stress disorder (PTSD), which can have devastating consequences for those afflicted by the condition. Studies indicate that modified prolonged exposure (mPE) therapy may be effective in preventing the development of PTSD in recently traumatized individuals, and especially for people who have experienced sexual assault. If a brief, manualized early intervention can prevent or reduce post-traumatic symptoms in women who have recently experienced rape, healthcare services targeted for these populations (i.e., sexual assault centers, SACs) should consider implementing such interventions as part of routine care.Methods/designThis is a multicenter randomized controlled add-on superiority trial that enrolls patients attending sexual assault centers within 72 h after rape or attempted rape. The objective is to assess whether mPE shortly after rape can prevent the development of post-traumatic stress symptoms. Patients will be randomized to either mPE plus treatment as usual (TAU) or TAU alone. The primary outcome is the development of post-traumatic stress symptoms 3 months after trauma. Secondary outcomes will be symptoms of depression, sleep difficulties, pelvic floor hyperactivity, and sexual dysfunction. The first 22 subjects will constitute an internal pilot trial to test acceptance of the intervention and feasibility of the assessment battery.DiscussionThis study will guide further research and clinical initiatives for implementing strategies for preventing post-traumatic stress symptoms after rape and provide new knowledge about which women may benefit the most from such initiatives and for revising existing treatment guidelines within this area.Trial registrationClinicalTrials.gov NCT05489133. Registered on 3 August 2022

Investigations on Rho/ROCK signaling in post-traumatic stress disorder-like behavior in mice

Post-Traumatic Stress Disorder (PTSD) is a chronic condition that occurs in response to a traumatic event, and consequently, enhances the threat sensitivity. Rho/ROCK signaling has been implicated in the consolidation of fear memory, stress, depression, anxiety, and traumatic brain injury. However, its role in post-traumatic stress disorder remains elusive. Therefore, the present study was designed to explore the role of fasudil, a Rho/ROCK inhibitor, a mouse model of PTSD. Mice were subjected to underwater trauma stress followed by three situational reminders. Underwater trauma (UWT) significantly increased the freezing behavior, a marker of the formation of aversive memory, in response to situational reminders on the 3rd, 7th, and 14th days, suggesting the significant development of PTSD. Trauma and situational reminders were also associated with significant changes in behavioral parameters in open field, social interaction and actophotometer tests, along with a reduction in serum corticosterone levels. Fasudil (10 and 15 mg/kg) and sertraline (15 mg/kg), a standard drug for PTSD, significantly decreased the freezing behaviour in response to situational reminders, suggesting the inhibition of the formation of aversive fear memory. However, fasudil and sertraline did not modulate normal memory functions, as assessed on elevated plus maze test, before subjecting mice to traumatic stress. Treatment with fasudil and sertraline significantly restored the behavioral changes and normalized the corticosterone levels. Fasudil-mediated blockade of the Rho/ROCK pathway may be responsible for blocking the formation of aversive memory during the traumatic event, which may be manifested in form of decreased contextual fear response during situational reminders.

Promoter methylation of the glucocorticoid receptor following trauma may be associated with subsequent development of PTSD

Objectives The ability to identify persons at elevated risk for post-traumatic stress disorder (PTSD) soon after exposure to trauma, could aid clinical decision-making and treatment. In this study, we explored whether cytosine methylation of the 1 F promoter of the NR3C1 (glucocorticoid receptor [GR]) gene obtained immediately following a trauma could predict PTSD. Methods Our sample comprised 52 trauma survivors (28 women, 24 men), presenting to the Emergency Department (ED) within six hours of a traumatic event and followed for 13 months. Blood samples were taken at intake (n = 42) and again at the end of the study (13 months later, n = 27) to determine NR3C1-1F promoter methylation as well as plasma levels of cortisol, adrenocorticotropic-hormone (ACTH), and neuropeptide-Y (NPY). Results At the 13-month follow-up, participants who met the PTSD criteria (n = 4) showed significantly lower NR3C1-1F promoter sum percent methylation compared to the non-PTSD group (n = 38). Further, NR3C1-1F methylation at ED intake was inversely correlated with PTSD severity 13 months later, indicating that lower NR3C1-1F promoter methylation in the immediate aftermath of trauma was associated with the development of PTSD. Conclusion To the extent that reduced promoter methylation is associated with greater GR expression and responsivity, this finding is consistent with the hypothalamic-pituitary-adrenal dysregulation previously described for PTSD.

Four reasons why we should screen for dissociation in competitive sports

Four reasons why we should screen for dissociation in competitive sports

Trauma Disorders - A Relevant Health Problem

Trauma Disorders - A Relevant Health Problem Abstract. In medical practice traumatic stress disorders are underdiagnosed. Post-traumatic stress disorder (PTSD) must be considered in case of pronounced need for control, severe anxiety and restlessness, jumpiness, mental torpor, dissociative disorders, social withdrawal, distrust or vegetative over-arousal. Simple screening instruments such as the "Primary Care PTSD Screen" are suitable for an initial assessment. As long as symptoms are not serious and long-lasting and there are no risk factors for the development of severe PTSD, it is a matter of creating external and internal security, informing about possible support, acknowledging the suffering and establishing secure interpersonal relationships. In the case of a pronounced PTSD with considerable psychological strain, a referral for further psychiatric or psychotherapeutic clarification and treatment is appropriate.